초록 ▼

An antiferroelectric liquid crystal display comprises: an antiferroelectric liquid crystal display element which includes an antiferroelectric liquid crystal that is sandwiched between a pair of substrates having a plurality of scanning electrodes and signal electrodes deposited respectively on the

An antiferroelectric liquid crystal display comprises: an antiferroelectric liquid crystal display element which includes an antiferroelectric liquid crystal that is sandwiched between a pair of substrates having a plurality of scanning electrodes and signal electrodes deposited respectively on the opposing surfaces thereof; and a light source which successively emits a plurality of different colors of light. In the thus constructed antiferroelectric liquid crystal display, a scanning period (TS) during which the light source emits light of one of the plurality of colors is divided into two periods, of which the first period (SC1) includes a selection period for determining a display state and a non-selection period for holding therethrough the display state selected during the selection period, and the second period (SC2), constituting the remainder of the scanning period, includes a selection period for forcing the display state into a black display state and a non-selection period for holding therethrough the black display state selected during the selection period.

대표청구항 ▼

The invention claimed is: 1. A liquid crystal display comprising: a liquid crystal display element which includes a liquid crystal that is sandwiched between a pair of substrates having electrodes deposited respectively on the opposing surfaces thereof; and a light source which sequentially emits R

The invention claimed is: 1. A liquid crystal display comprising: a liquid crystal display element which includes a liquid crystal that is sandwiched between a pair of substrates having electrodes deposited respectively on the opposing surfaces thereof; and a light source which sequentially emits Red, Green and Blue colors of light, wherein a scanning period during which said light source emits light of one of said Red, Green and Blue colors is divided into two periods, of which the first period includes a selection period for determining a display state, and wherein said display state is forced into a black display state in the second period, constituting the reminder of said scanning period. 2. A liquid crystal display as claimed in claim 1, wherein said liquid crystal display element having at least one scanning electrode and at least one signal electrode, wherein a signal voltage which is applied to the signal electrode(s) in the second period is always set to a signal voltage waveform for displaying a black state. 3. A liquid crystal display as claimed in claim 1, wherein said first and second period have approximately the same length. 4. A liquid crystal display as claimed in claim 1, wherein said first period is located approximately the middle of said scanning period. 5. A liquid crystal display as claimed in claim 1, wherein said liquid crystal is a ferroelectric liquid crystal. 6. A liquid crystal display comprising: a liquid crystal display element which includes a liquid crystal that is sandwiched between a pair of substrates having N scanning electrodes and M signal electrodes deposited respectively on the opposing surfaces thereof; and a light source which sequentially emits Red, Green and Blue colors of light, wherein, a period during which said light source emits light of one of said Red, Green and Blue colors is divided into an even number of scanning periods, wherein, in an odd-numbered scanning periods, one of forward scanning and backward scanning is performed, and in an even-numbered scanning period, the other of the forward scanning and the backward scanning is performed, and wherein the forward scanning is performed by scanning said scanning electrodes forward, starting at the first scanning electrode and progressing toward the N-th scanning electrode and the backward scanning is performed by scanning said scanning electrodes backward, starting at the N-th scanning electrode and progressing toward the first scanning electrode. 7. A liquid crystal display as claimed in claim 6, wherein in said even-numbered scanning period, the forward scanning is performed and, in said odd-numbered scanning period, the backward scanning is performed. 8. A liquid crystal display as claimed in claim 6, wherein said liquid crystal is a ferroelectric liquid crystal. 9. A method of driving a liquid crystal display comprising a liquid crystal display element which includes a liquid crystal that is sandwiched between a pair of substrates having electrodes deposited respectively on the opposing surfaces thereof and a light source which sequentially emits Red, Green and Blue colors of light, the method comprising the steps of: dividing a scanning period during which said light source emits light of one of said Red, Green and Blue colors into two periods; determining a display state in the first period; and forcing said display state into a black display state in the second period which constitutes the remainder of said scanning period. 10. A method of driving a liquid crystal display as claimed in claim 9, wherein said liquid crystal display element has at least one scanning electrode and at least one signal electrode, and wherein a signal voltage which is applied to the signal electrode(s) in the second period is always set to a signal voltage waveform for displaying a black state. 11. A method of driving a liquid crystal display as claimed in claim 9, wherein said first and second period have approximately the same length. 12. A method of driving a liquid crystal display as claimed in claim 9, wherein said liquid crystal is a ferroelectric liquid crystal. 13. A method of driving a liquid crystal display comprising a liquid crystal display element which includes a liquid crystal that is sandwiched between a pair of substrates having N scanning electrodes and M signal electrodes deposited respectively on the opposing surfaces thereof and a light source which sequentially emits Red, Green and Blue colors of light, the method comprising the steps of: dividing a period during which said light source emits light of one of said Red, Green and Blue colors into an even number of scanning periods; in an odd-numbered scanning periods, performing one of forward scanning and backward scanning; and in an even-numbered scanning period, performing the other of the forward scanning and the backward scanning, wherein the forward scanning is performed by scanning said scanning electrodes forward, starting at the first scanning electrode and progressing toward the N-th scanning electrode and the backward scanning is performed by scanning said scanning electrodes backward, starting at the N-th scanning electrode and progressing toward the first scanning electrode. 14. A method of driving a liquid crystal display as claimed in claim 13, wherein in said even-numbered scanning period, the forward scanning is performed and, in said odd-numbered scanning period, the backward scanning is performed. 15. A method of driving a liquid crystal display as claimed in claim 13, wherein said liquid crystal is a ferroelectric liquid crystal.